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Can't install any version of forge server

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December 15, 20214 yr

Yes, I have updated java, and uninstalled and reinstalled it.
I've tried it on 1.18.1 and 1.12.2.
My antivirus is off (Windows defender)

This is the error

Spoiler

JVM info: Oracle Corporation - 17.0.1 - 17.0.1+12-LTS-39
java.net.preferIPv4Stack=true
Found java version 17.0.1
Extracting main jar:
Extracted successfully
Considering minecraft server jar
javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
   at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:131)
   at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:370)
   at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:313)
   at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:308)
   at java.base/sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:654)
   at java.base/sun.security.ssl.CertificateMessage$T12CertificateConsumer.onCertificate(CertificateMessage.java:473)
   at java.base/sun.security.ssl.CertificateMessage$T12CertificateConsumer.consume(CertificateMessage.java:369)
   at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:396)
   at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:480)
   at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:458)
   at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:200)
   at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:172)
   at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1500)
   at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1415)
   at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:450)
   at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:421)
   at java.base/sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:580)
   at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:183)
   at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1665)
   at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1589)
   at java.base/java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:529)
   at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:308)
   at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:243)
   at net.minecraftforge.installer.DownloadUtils.downloadManifest(DownloadUtils.java:307)
   at net.minecraftforge.installer.json.Util.getVanillaVersion(Util.java:73)
   at net.minecraftforge.installer.actions.ServerInstall.run(ServerInstall.java:86)
   at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:423)
   at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:175)
   at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
   at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:439)
   at java.base/sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:306)
   at java.base/sun.security.validator.Validator.validate(Validator.java:264)
   at java.base/sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:231)
   at java.base/sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:132)
   at java.base/sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:638)
   ... 24 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
   at java.base/sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
   at java.base/sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
   at java.base/java.security.cert.CertPathBuilder.build(CertPathBuilder.java:297)
   at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:434)
   ... 29 more
Failed to download version manifest, can not find server jar URL.

Quote

December 15, 20214 yr

I am not 100% sure, but I believe Java 17 is only for Minecraft 1.18

For previous versions (or at least for 1.12) try with Java 8 (Also called 1.8.0)

Here you have a resume

https://minecraft.fandom.com/wiki/Tutorials/Update_Java

PS: Apparently for MC 1.17 it's Java 16 that is needed.

Edited December 15, 20214 yr by American2050
Added link and more information

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Mi mapa de journey map no carga las partes nuevas del mundo que exploro.

Please use English on the forums.

I would suggest getting in contact with the mod creator, and seeing if they have a solution. We are just a modloader that can be used to make mods. If a mod has a issue, it is generally suggested to get in contact with them. Maybe there is something up with the fact that Aternos is used and that they have a max cap on waypoints / loading features, but I am not too sure of that

By FinnT730 · 2 hours ago2 hr
Silent Accord Mod Idea

Hello modders,

I have a detailed concept for a Minecraft mod called Silent Accord and I’m looking for a collaborator. I don’t have a budget, but I can provide a full design document and help with ideas, testing, and content.

The mod idea:

Every hostile mob (and most neutral mobs) has a rare neutral variant that is passive unless attacked.

Players can gain trust with these rare variants. Trust spreads only to the same species, while killing regular mobs lowers trust and increases fear in nearby regular mobs.

Rare variants are always neutral, even if you kill regular mobs.

Trust does not drift naturally — the world permanently remembers your choices.

Friendly rare variants can eventually help the player in combat or provide small rewards.

Normal spawn rates and difficulty remain unchanged.

Multiplayer is supported: each player has separate trust/fear levels.

Core Features in Detail:

1. Rare Variants

Unique visual cue.

Always neutral unless attacked.

Spread trust via “Trust Pulses” to nearby same-species mobs while alive.

2. Trust & Fear System

Killing 1–2 regular mobs → slight trust decrease.

Repeated killing → fear increases, regular mobs revert to hostile.

Trust spreads locally through rare variants only.

Permanent until changed by player actions.

3. Friendly Behavior

Rare variants and some influenced regular mobs can become friendly or protective.

Friendly mobs may assist the player against threats of the same species.

Trust must be earned and maintained.

4. Scope

Ideally includes every hostile mob and most neutral mobs across dimensions.

Can start with Overworld mobs only as version 1.0.

Why This Mod is Exciting:

Adds emotional depth and moral choice to survival gameplay.

The world reacts permanently to player actions.

Rare variants give players allies in dangerous areas without making the game easy.

Scalable: start small, expand to full world.

What I Can Provide:

Full design document with every mob, rare variant, and trust/fear rules.

Testing and feedback.

Creative input for visuals, names, and behaviors.

I’m looking for a modder who wants to collaborate on Silent Accord, starting with a smaller subset of mobs if needed. If you’re interested, I can send the complete design document so you can see exactly how it would work.

I’m really excited about this mod and think it could be something unique in the Minecraft community.

If you think of someone else who could help me, please let me know

Thank you for your time!

By Hemioafjr · 16 hours ago16 hr
Mi mapa de journey map no carga las partes nuevas del mundo que exploro.

Hacew un mes cree mi mundo en aternos y todo iba bien, hasta que empece a explorr nuevos lugares y el mapa dej+o de cargar, además de que se me borran los waypoints que pongo. Intenté descargar el mod en otro lado, actualizar la versión, borrar el mod y volverlo a poner, pero nada funciona. Mi mundo está muy avanzado y nno puedo borrarlo.

By Faustina · 21 hours ago21 hr
Custom modpack wont load

Dang okay 😭

By ehurley4 · Friday at 04:34 PM2 days
Custom modpack wont load

I have no idea - nothing mentioned

By TileEntity · Friday at 04:31 PM2 days

Can't install any version of forge server

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Mi mapa de journey map no carga las partes nuevas del mundo que exploro.

Silent Accord Mod Idea

Mi mapa de journey map no carga las partes nuevas del mundo que exploro.

Custom modpack wont load

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